History: This 5 y.o. boy had a neck abscess three weeks ago. That was treated with drainage and antibiotics. Now, he presents with lower extremity weakness.

Findings: • T1W MR images of the lumbar spine without and with IV gadolinium. show enhancement and thickening of the nerve roots of the cauda equina.
• Findings suggest polyneuritis and are consistent with GUILLAIN-BARRE

History: This 5 y.o. boy had a neck abscess three weeks ago. That was treated with drainage and antibiotics. Now, he presents with lower extremity weakness.

Findings: • T1W MR images of the lumbar spine without and with IV gadolinium. show enhancement and thickening of the nerve roots of the cauda equina.
• Findings suggest polyneuritis and are consistent with GUILLAIN-BARRE